Editorial Technical Reference

Hot Aggregate Elevator

This page explains how Hot Aggregate Elevator is classified within Machinery and Equipment Manufacturing. Technical values and manufacturer relationships are research references; confirm the current specification and supplier evidence for each order.

Technical Definition & Core Assembly

A mechanical conveyor system that vertically transports heated aggregates from the dryer to the screening and storage section in an asphalt mixing plant.

Representative product image. Confirm appearance and specifications with the manufacturer.

Product Specifications

Technical details and manufacturing context for Hot Aggregate Elevator

Definition
The Hot Aggregate Elevator is a critical component of an asphalt mixing plant that lifts heated aggregates (typically at temperatures between 150-200°C) from the dryer drum discharge to the top of the plant's screening and storage tower. It ensures continuous material flow while maintaining temperature consistency and preventing heat loss during vertical transportation. The elevator is designed to handle high-temperature materials, with components made from heat-resistant steel and alloys. It operates as a chain-driven bucket elevator, where buckets attached to a continuous chain scoop the hot aggregates from the dryer discharge hopper and carry them vertically to the discharge point. The system is available in various configurations to match plant capacities, with rated capacities ranging from 100 to 400 t/h and lifting heights from 15 to 45 meters. Bucket speeds typically range from 1.2 to 2.0 m/s, and material temperatures are maintained between 140 and 180°C to prevent damage to the buckets. Motor power varies from 15 to 75 kW, depending on capacity and height, and the drive voltage is 380-690 V AC (3-phase, 50/60 Hz) per IEC 60038. The elevator is protected against dust ingress with an IP54 to IP65 rating per IEC 60529. Chain types follow ISO 606 standards (16A-32A), and bucket materials are typically Q235B to Q345B steel per GB/T 700. The overall weight ranges from 8 to 25 tons, which is a consideration for foundation load. For any specific application, it is essential to verify model-specific values and standards with the legal manufacturer or supplier, as these are reference ranges and not guarantees of compliance.
Working Principle
The Hot Aggregate Elevator operates on a chain-driven bucket system. Multiple buckets are attached to a continuous chain that moves through an enclosed casing. At the bottom, the buckets scoop heated aggregates from the dryer discharge hopper. The chain then carries them vertically upward. At the top, the aggregates are discharged into the screening section via centrifugal force or gravity discharge mechanisms. The continuous operation ensures a steady flow of material, minimizing heat loss and maintaining temperature consistency.
Common Materials
High-temperature resistant steel, Heat-resistant alloy buckets, Wear-resistant chain components
Technical Parameters
ParameterTypical rangeNotes & selection driver
Rated Capacity100–400 t/hMatches asphalt plant output
Lifting Height15–45 mDetermines motor power and chain length
Bucket Speed1.2–2.0 m/sHigher speed increases wear
Material Temperature140–180 °CExceeding 180°C damages buckets
Motor Power15–75 kWDepends on capacity and height
Drive Voltage380–690 V AC3-phase, 50/60 HzIEC 60038
Protection ClassIP54–IP65Dust-tight for aggregate environmentIEC 60529
Chain Type16A–32AHeavy-duty roller chainISO 606
Bucket MaterialQ235B–Q345BWear-resistant steel for hot aggregatesGB/T 700
Overall Weight8–25 tFoundation load consideration

Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.

Components / BOM
  • Elevator Buckets Part
    Scoop and carry heated aggregates during vertical transport
    Material: Heat-resistant steel or alloy
  • Drive Chain Part
    Provides continuous motion to transport buckets along the elevator path
    Material: Wear-resistant alloy steel
  • Head Section
    Contains drive mechanism and discharge point for aggregates
    Material: Structural steel
  • Boot Section Part
    Bottom intake area where aggregates are loaded into buckets
    Material: Structural steel with wear plates
  • Elevator Casing
    Enclosed structure that contains and guides the elevator system
    Material: Steel plate with insulation

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Hot Aggregate Elevator.

Applied To / Applications

This component is essential for the following industrial systems and equipment:

Industrial Ecosystem & Supply Chain Structure

Complementary Systems
Downstream Applications
Specialized Tooling

Application Fit & Sizing Matrix

Operational Limits
pressure: Atmospheric pressure only - not designed for pressurized systems
other spec: Maximum aggregate size: 50mm (2 inches), Maximum flow rate: 400 tons/hour, Minimum slurry concentration: Not applicable (dry material handling only)
temperature: Up to 200°C (392°F) for continuous operation, with peak tolerance up to 250°C (482°F) for short durations
Media Compatibility
✓ Hot asphalt aggregates (crushed stone, gravel, sand) ✓ Recycled asphalt pavement (RAP) materials ✓ Virgin mineral aggregates for asphalt production
Unsuitable: Wet or slurry materials, corrosive chemical environments, or explosive dust atmospheres
Sizing Data Required
  • Required throughput capacity (tons/hour)
  • Maximum aggregate size and gradation
  • Plant layout constraints (vertical lift height and available footprint)

Reliability & Engineering Risk Analysis

Failure Mode & Root Cause
Chain wear and elongation
Cause: Abrasive wear from aggregate particles, improper lubrication, and excessive loading leading to chain stretch and misalignment.
Bucket detachment or deformation
Cause: Fatigue cracking from cyclic loading, impact damage from oversized material, and corrosion weakening bucket-to-chain attachments.
Maintenance Indicators
  • Excessive noise or grinding sounds from the elevator casing indicating chain/bucket contact or misalignment
  • Visible material spillage or dust leakage from elevator seals or joints signaling seal failure or structural gaps
Engineering Tips
  • Implement regular chain tension monitoring and alignment checks using laser alignment tools to prevent premature wear and catastrophic failure
  • Install wear-resistant liners in critical contact areas and use hardened chain/bucket materials specifically rated for abrasive aggregate service

Indicative industry ranges for design and RFQ preparation. Confirm the exact figures and applicable standard with the manufacturer before specifying.

Compliance & Manufacturing Standards

Applicable Standards
ANSI/ASME B20.1 - Safety Standard for Conveyors and Related Equipment DIN 22101 - Continuous conveyors - Belt conveyors for loose bulk materials

Quoted from the published standard.

Manufacturing Precision
  • Belt alignment: +/- 5 mm over entire length
  • Elevator casing flatness: 2 mm per meter
Quality Inspection
  • Non-Destructive Testing (NDT) - Ultrasonic testing for weld integrity
  • Material Composition Verification - Spectrographic analysis for alloy compliance

Manufacturers of Hot Aggregate Elevator

Manufacturer profiles associated with Hot Aggregate Elevator.

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Frequently Asked Questions

What is the typical capacity range of a hot aggregate elevator?

The rated capacity typically ranges from 100 to 400 t/h, matching the asphalt plant's output. The exact capacity depends on the specific model and application, so it must be verified with the manufacturer.

What materials are used in the construction of the elevator?

The elevator uses high-temperature resistant steel for the casing, heat-resistant alloy buckets, and wear-resistant chain components. Bucket materials are typically Q235B to Q345B steel per GB/T 700, but confirm with the supplier.

What is the maximum material temperature the elevator can handle?

The material temperature is typically maintained between 140 and 180°C. Exceeding 180°C can damage the buckets. Always verify the temperature limits with the manufacturer for your specific model.

What standards apply to the elevator's electrical and mechanical components?

The drive voltage follows IEC 60038 (380-690 V AC), protection class per IEC 60529 (IP54-IP65), and chain type per ISO 606 (16A-32A). These are reference standards; compliance must be confirmed with the manufacturer.

Data Basis

Editorial classification, named public sources where available, and source-reviewed manufacturer records.

Preliminary Technical Classification
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